ThangG05/FETTCN — reverse-engineered prompt

I want a simple Flutter mobile app called App Hub. Make it feel like a finished small app, with a clean home screen, bottom navigation, and a few main pages for browsing content, viewing details, and checking a profile or settings page.

The app should be easy to run on Android, use Dart, and have organized code so I can edit it later. Please create the screens, navigation, reusable widgets, basic sample data, and simple state handling so everything works without needing a backend. Give it a modern layout with cards, icons, nice colors, and make sure it looks good on different phone sizes.

Keep the wording simple and friendly. If any details are missing, choose sensible defaults and finish the project so I can open it in Flutter and run it right away.